Can bettas live with ember tetras?
⚠️ Caution Sometimes, with care
- ⚠️ Caution An adult betta fish (up to 7 cm) may try to eat smaller ember tetra (2 cm), especially at night.
| Betta fish | Ember tetra | |
| Temperature | 72–86 °F (22–30 °C) | 68–82 °F (20–28 °C) |
| pH | 6–8 | 5–7 |
| Adult size | 2.8 in (7 cm) | 0.8 in (2 cm) |
| Temperament | Semi-aggressive | Peaceful |
| Swims in | Top | Middle |
| Minimum tank | 10 gal | 10 gal |
Shared temperature: 72–82 °F (22–28 °C) · Shared pH: 6–7
Tips if you keep them together
- Keep only one betta fish (or one male).
- Keep ember tetras in a group of at least 8.
- Use a tank of at least 10 US gallons with plenty of plants and hiding places.
- Set the heater around 77 °F (25 °C), the middle of the shared range.
See all betta fish tank mates and ember tetra tank mates, or add more species in the checker.
FAQ
Can bettas live with ember tetras?
Sometimes, with care. An adult betta fish (up to 7 cm) may try to eat smaller ember tetra (2 cm), especially at night.
What temperature for bettas and ember tetras?
Betta fish: 72–86 °F (22–30 °C). Ember tetra: 68–82 °F (20–28 °C). Shared range: 72–82 °F (22–28 °C).
What size tank for bettas and ember tetras?
At least 10 US gallons, more as you add fish.
Note: Compatibility depends on individual temperament, tank size, decor and how fish are introduced. Our verdicts use conservative rules applied to published care data (see methodology). They are guidance, not a guarantee. Quarantine new fish and watch for chasing, torn fins or hiding.